If the vehicle number will be changed for consolidated e-way bill ,what to do then ?

You can choose to egenerate CEWB’ under the Consolidated EWB menu. This option allows you change your vehicle number to an existing Consolidated EWB without having to alter the individual EWBs. This creates a new CEWB that must be carried with the new vehicle. The old CEWB will no longer be valid for use.